MK7 Stainless Steel Extrusion Gear for 1.75mm Filament

Description
The 3D Printer MK7 Stainless Steel Extrusion Gear for 1.75mm Filament extra sharp CNC machined ?teeth? grip the filament exceedingly well. An M4 set screw is used to secure the drive gear to a 5mm motor shaft. A direct replacement for many extruders.

Specifications
Outer diameter: 12mm
Inner diameter: 5mm
Extrusion scalloped diameter: 10mm
Height: 13mm